Box-making machine and the like



Aug. 16, 1921.

S. BERGSTEIN Box MAKING MACHINE ANDTHELIKE Filed July 14. 1926 5Sheets-sheaf 1 IN VEN TO R.

Aug. 16 1927. 1,639,283

S. BERGSTEIN BOX' MAKING MACHINE AND THE LIKE Filed July 14.- 1926 5Sheets-Sheet 2 IN V EN TOR.

ATTORNEY Aug. 16 1927;

S. BERGSTEIN BOX MAKING MACHINE AND THE LIKE Filed July 14 1926 5Sheets-Sheet Q Aug. 16-, 1927.

' s B ERGSTEIN BOX -MAXI [HG MACHINE AND THE LIKE 5 Sheets$heet 4 Filed'July 14 1926 INVEN TOR.

Aug. '16, 1927. v

v 5. BERGSTEIN Box MAKING MACHINE AND THE LIKE- Filed Jul 14. 1926'E'Sheets-Sheet 5 INVENTOR.

' \ATTORNEY.

Patented Aug. 16, 1927.

" warren STATES PATENT OFFICE] SAMUEL BERGSTEIN, or MIDDLETown,oniqassrei on' TO THE INTEnsTArn'FoLD- ING BOX COMPANY, or MIDDLETQWN,OHIO.

Box-MAKING MACHINE AND THE LIKE.

Applicationifiled July 14,1926. Serial No. 122,293.

This invention relates to improvements in paper box making machines.

A large percentage of paper box users of the general types the improved,machine 01" this invention is adapted to make require them in a Widerange of sizes. The present type of standard machines tor making sealedboxes of this character are of heavy con' .or manual assembledlock-joint boxes must be used 2. substitute tor glued boxes, the

latter being preferred because of their better construction, neaterappearance and lower cost. I

The objects attained in the present invention consist in a simpleinexpensive machine which does notrequire a skilled operator, which is,capable of large output, which is adaptable for the full range ofordinary boxes and which can be changed from one size to another in amere traction of the time required for changing the large box makingmachines now commonly used.

For larger users who require a constant supply of boxes of differentsizes, it will be economical to install a machine of the simpler type,as herein set forth, for each size of box required in regular quantitiesas the cost and operation of the machines is so low that the saving oftime and interrupted production will in a short time pay the cost of themachines.

\Vith the improved tice of the invention herein set forth the box blanksas furnished to the customer may be prepared with adhesive, requiringonly 7 pressure.

'hine out of pro-- machine andthe pracform a firmer joint withrelatively lower he machine as herein set forth is readily adaptable bymaking suitable"modifications in the box supporting elements forassembling b'oxesot varied types and in a wide range of sizes. For thepurpose of demonstrating this teature of the inventiontwo forms of thebox supporting mechanism and two types of boxes are shown, it being-umderstood that this is for the purpose of illustrating the generalpractice of the invention both as to modilications oi the apparatus andthe method 'or process of assembling boxes. v Q In the accompanyingdrawings- "which serve to give effect to the herein illustrations anddescription of the invention: I n

Fig. l is a side elevation of the machine;

2 is an end elevation; Fig. 3 s a plan view; Figs. 4 and 5 are enlargedperspective views of the box formingmechanism in one form illustratingprogressive steps of product-ion;

Fig; 6 is a detail view of Fig. 4; 1 Fig. 7 is a view of the-boxblankadapted to be formed on the mechanism shown-in Figs. 4-6;

Figs. 8 to 11 are perspective views of the box sealing mechanism in amodified construction illustrating progressive steps of forming a box; l12 is a detail view of Fig. 8; Fig. 13 is a view of the box blankillustrated in Figs. 8-11;

Fig. 14 is a view of the box illustrating a step of forming precedingthe operations on the machine;

.Fig 15 is an enlarged view of adhesive applying mechanism shown in Fig.5;

Fig. 16 is a detail view of intermittent gears .in the driving mechanismof the machine.

As'here shown the machine comprises a suitable frame structure 1 inwhich an endless cari'ier, consisting of opposite chains 2 traversingsprockets 3'4 on shafts 56, is supported. Operating movement istransmitted to the carrier drive shaft 5 from a motor"? throughconnections consisting of the motor shaft 8, coupling 9, worm gearing10-11,

clutch 12, shaft 13, chain and ing device illustrated in Fig. 10,

sprocket connections -1(" the upper sprocket 16 being on a .hatt 1'?which has an intermittentgear connection 18-19 with a shaft 20 whichconnected to shaft 5 by a chain and sprockets 21.2223. To adapt thecarrier to variable spacing of the box supporting members 2ei25 oi themodified constructions and for adjusting the carrier for right relationto the sprock ts,sprocket shaft 6 is supported in slidable bearings 26adjustable longitudinally of the machine in open bearings 27 at the rearend of the machine.

The intermittent gearing 1819 serves to transmit a step by step movementto the box carrier and to move the box supporting members 2425successively into position at the front end of the machine tor havingthe box blanks 28, as illustrated in Fig. 7, or the tubular box sections29, illustrated in Fig. 14, placed thereon manually by he machineattendant, a suitable work table 30 being provided atthe front end ofthe machine for supporting a supply of the box material for theconvenience of the operator.

The means here shown for rendering the sealing flaps of the boxesadhesive may consist of an adhesive applying device, illustrated inFigs. 5 and 15, or a moisture applythe machine being adaptable foreither use. In the first instance the box blanks as furnished to theuser are without adhesive the same being applied on the box formingmachine; in the second instance the adhesive is on the blanks as thesame are supplied by the manutacturer, the application 01": moistureonly being required to render the sealing flaps adhesive for forming thejoints.

The mechanism and operation for forming the box illustrated in Figs. atto 7 consists of a series of the box forming blocks 24 secured to thecarrier chains 2, the blocks being equally spaced one from another topresent the same in regular sequence adjacent the work table 80. Thesides a-a are turned down over the front and rear edges of the formingblock manually and are retained by yieldable clips 31. In the positionshown in Fig. i the box supporting members 2st as moved along by thechains 2 are supported on guides 32 extended parallel with the chains,the guides being curve downward at their forward ends to support themembers 24 as the same are moved upward over sprockets 3, said membersbeing connected pivotally to the chains at their forward ends only asindicated at 33 to adapt the same to traverse the sprockets.

The box blanks supported on the forming blocks. as illustrated in Fig.4:. have the flaps 7 c0 at cacti end oi? the box extended. the rearflaps 0 being in position to be engaged by guides 84: the flaps beingdirected manually to pass inside the guides, and the forward flaps bygui'les 35, the rear flaps 0 also being engaged by guides 35 as the samepass from guides 34, the action of guides E l-35 being to fold flaps 00over the side edges of the forming block, the "sealing flaps I)remainingextended in position to be engaged es the pressure devices 38which act yieldingly but with suiiicient pressure upon the folded.portions Z)cc to eiifect adhesion between the same, the pressure beingsus'ained, by reason of the extended arrangement of the pressure devicesalon the oath of the boxes the required length of time to cause theadhesive to set and to make the oints firm. The sealing flaps beingsupported by the sides of the Storming blocks 24 against the action ofthe pressure devices 38 the joints relatively low pressure with theminimum of adhesive. Thus the difiiculties arising with high whichrequire more adhesire and tend to i oul the product more or less, asWell as the machine, with an excess of adhesive are overcome.

The construction of the adhesive apolyof the glue container 41. Abracket a2 is arranged telescopically on the post by a sleeve 43, thesleeve being interposed between an adjusting nut 44;, threaded on thepost and acting to support the sleeve on its lower end, and a spring 45retained on the post by a nut 39 and acting yieldingly to exert pressure against the opposite end of the sleeve. A roller M5 is supported inbracket 42 and a roller 47' is supported in the-walls of the adh'eivecontainer,'the rollers being connectcd by gears 4&8. The lower roller isdriven by a chain on sprocket connection 49-50 51, the sprocket 51 beingsecured on shaft 1'? (see Fig. 1), a continuous operating move mentbeing thus transmitted to the adhesive roller 47. The upper rolleradjusting meansparts 39-394l l and l5:erve for regulating the coactionbetween the upper and lower rollers according to the thickness of thebox blank stock that is to be run on the machine. By this arrangementuniformit) may be obtained in the application of the adhesive on theblanks. To this end also a scraper 52 (see Fig. 5) is provided for theadhesive carrying roller 4:7, the scraper being rc formed at pressurebox making. machines the boxes are ly of the machine for larger orsmaller boxes,

as the case may be.

To further adapt the machine for boxes of different sizes the boxsupporting blocks 24 have sufficient depth for the maximum depth ofboxes of a given length and width. hen these dimensions, the length andwidth of the boxes, are changed the supporting members 2e are replacedwith others of the required size. The guides 35 arealso arranged forvertical and lateral adjustments by means of supporting bracketsconsisting of vertically extended stems 56 supported in slidable bases57 on the frame of the machine, and laterally extended adjustable stems58 supported in brackets 59 on stems 56. The guides 37 and pressuredevices 38 are also adjustable vertically and laterally of the machineby means of bracket.' 60 and 61 by a similar arrangement of slottedconnections.

The modifications of box and machine shown in Figs. 8-14 are merely forillustrating the ready adaptability of the machine for a wide range ofboxes of different types, the principle of the invention as applied inthe modifications being the same. The box as here shown consists ofopposite sections (Z(Z as illustrated in Fig. 8, the same being adaptedto be disposed telescopically one section relative to the other forclosing the box, one of the sections being accordingly sufiicientlylarger than the other to permit of telescoping the sections. Eachsection comprises side walls ee-ef, the portion 7 having a sealing flap9 adapted to be joined to portion 6 at the opposite end of the blank toeffect a tubular shape of the box as illus trated in Fig. 14. Theportion f also has the outer sealing flap h, the margins having adhesiveapplied thereto, and parts e-ee having the inner flaps i, themodification as here shown serving to illustrate the practice ofapplying adhesive to the box blanks before the same are run on the machine. This may be done by applying the adhesive on the paper sheetsbefore the box blanks are cut from the sheets, or by applying theadhesive to the blanks after the same are cut.

Special machines and processes for an improved practice of paper boxmaking in which adhesive tape or liquid glue are used for preparing thebox blanks constitute inventions subject matter of separate applications for patents I have pending. The practice of present invention,however, contemplates the use of any suitable means and methods forpreparing the box blanks with adhesive.-

The box-supporting members 25 as best shown in 8l2are preferably ofhollow. formation, as are also the members 2%, to re- "uce their weight.The supports are connected to chain 2, a single chain being used themodified construction, pivotally as incated at 62 to adapt the same tomove over the sprockets 3t, the opposite ends of the supports beingextended laterally beyond in d1 guides 63, which serve to balance thebox supporting members, thus presenting the ends free, before thesupports are engaged by outer, lower guides 64, for having the tuoularbox sections placed thereon by the machine attendant, this step of theoperation being illustrated in Fig. 8. In view of the difference in sizeof the box sections, one end of the box supporting member is madecorrespondingly iarger than the other end so that loose fit of both boxsections on the supporting member 25 is obtained.

As the box supports are moved along from the position illustrated inFig. 8 the forward sealing flaps t are folded by guides 65, the

lower flaps 5 are folded by guides 66, the

rearward flaps i being directed under guides 65 by the machine attendantand all the flaps -a' being retained, as folded, by guides The outersealing flaps are then acted upon by moistening devices which aresimilar in construction and operation to the adhesive applying devicesherein described except that a web 67 is substituted for the rollers,moisture being conveyed to the web by capillary action from thecontainer 72 by a wick '73 to render the portions j of the sealing flaps-h adhesive.

Following moistening of the sealing flaps the same are acted on byguides 68 which fold flaps it over flaps z', the latter moving out ofengagement with guides 66 as flaps h are folded, the folded ends of theboxes being then acted on by pressure devices 69, in a manner similar tothe action of the pressure devices 38 to effect firm adhesion betweenportions hi the same being supported from within by the box supportingmembers 25 as the pressure of the springs 69 is brought to bear on theends of the box, the action being effective to form firm joints withoutthe diificulties arising which are incident to common practice whereordinary methods of making paper boxes are followed.

As shownin Fig. 11 adjusting screws 70 are employed for regulating thetension of springs '69 to the requirements of the sealing operation. Themeans for adjusting the various parts of the modified construction toadapt the machine for boxes of different sizes are similar to thearrangements desprockets -fi-,

vover form approximating scribed in. connection with Figs. l-5 and donot require further description for a clear understanding of thei.i'ive11tion. V

Opposite guide rails 71, as best shown in Fig. 1, serve to support thebox supporting members 2%- in the lower course of the box carrier and todirect the same around the the forms bein open on the permit oi theirfree movement under side to over sgrocket as illustrated in Fig. 1.

From the foregoing detailed description and the illustrations in thedrawings the construct-ion and operation of the improved box makingmachine and the new method of making boxes are practiced on the machinewill be readily unlerstood by those experienced in the art to which theinvention relates. 'lhe underlyii'ig principle oi the invention,generally stated as applied to the machine consists in positioning theblanks dimensions of the boxes to be made, i rendering the sealing flapsadhesive, in folding the coasting flaps one relative to another and inapplying sustained )ICSSUXG to the adhering portions to effect jointstherebetween. The broader nov-lty of the invention consists in the improved apparatus with its modifications and the method oi practicing theinventionthereon.

f-laving described my invention, 1 claim:

ed to be arranged telescopically one with the other positioned thereonoppositely one of the other with sealing flaps extended, means acting tofold certain of said flaps, in rendering other flaps adhesive andfolding the same over the first folded flaps, and pressure meanscoacting with said forms to eii'ect adhesion between the flaps.

2. A box making machine including a box carrier for moving box blanksthrough asequence oi forming operations, a series of horizontallydisposed box supporting forms movable with the box carrier havingoppositely extended ends adapted to have initial ly formed box memberspositioned telescopically thereon, with sealing flaps extended, meansacting to fold certain of said flaps, in rendering other flaps adhesiveand folding the same over the first folded flaps, and pressure meanscoacting with said forms to eiiect adhesion between the flaps.

3. A box making machine including a box carrier for moving box blanksthrough a sequence of forming operations, a series of box supportingforms movable withthe carrier and having oppositely extended ends 01;dilierent sizes, adapted to have initially formed box members positionedtelescopically thereon with sealing flaps extended, means actingconcurrently on the boxmembors to fold certain of said flaps, inrendering other flaps adhesive and folding the same over the firstfolded flaps, and pressure means coacting with said forms to effectadhesion between the flaps.

in testimony whereof, I atlix my signature.

SAMUEL BERGSTEIN.

